Are public schools in Texas really teaching anybody that Jesus rode a dinosaur to work...?Yes, pretty much. See http://www.nytimes.com/2013/09/29/education/creationists-on-... and plenty of other articles. The National Center for Science Education (http://www.ncse.com) is a good place to pick up further insights.
This scenario is a sufficient argument for placing K-12 education under Federal control, in my view. Local control makes absolutely no sense where teaching objective facts in a standardized curriculum is concerned.
For what it's worth, I grew up in South Carolina, went to a Christian school up through 5th grade and grew up in a Southern Baptist Church. At no point during any of this did anybody try to convince me that the world was 10,000 years old. We learned dinosaurs lived 65 million years ago.
At this point I'd say you're an exception, but I don't have access to the statistics I'd need to make the case. Most Christian denominations may not specifically encourage their followers to toe the "Intelligent Design" line, but among Southern Baptists, my experience is that they do. (Of course, the Earth was only 6,000 years old when I was a kid.)
This school brainwashing stuff that floats around the internet is a scare tactic at best and an isolated minority of people at worst who actually believe their children aren't going to have internet access one day. Most of the best schools in my area now spend more time focussing on teaching kids HOW to learn effectively and core life skills because there is an assumption that the bulk of the information is a few clicks away. Somebody teaches a kid a made up story, that kid is eventually going to have Google and question just about everything those people ever told him.
I'd like to agree with you (and did at one point) but the opposite seems to be happening. The rise of the Internet has disintermediated us from our teachers, so to speak. Every moron with an opinion and a Facebook account is an "authority" now.
This isn't just a right-wing phenomenon, either -- look at the childhood vaccination rates in places like Marin County. It's another example of something that should have gotten better, but instead has gotten worse. As you said elsewhere, it's not a partisan issue.